Cardiff, United Kingdom 14-Day Forecast
58°
Overcast right now
Today: high 72°, low 58°
Updated 5 hours ago
Cardiff weather for the next 14 days
Wednesday, August 19
Patchy rain nearby High 69° Low 54°Precipitation
57%
· 0.06 in
Max wind
20 mph
Humidity
76%
UV index
5 - Moderate
Sunrise / sunset
06:05 AM / 08:27 PM
Thursday, August 20
Patchy rain nearby High 67° Low 52°Precipitation
51%
· 0.03 in
Max wind
14 mph
Humidity
75%
UV index
4 - Moderate
Sunrise / sunset
06:06 AM / 08:25 PM
Friday, August 21
Sunny High 68° Low 48°Precipitation
38%
· 0.03 in
Max wind
12 mph
Humidity
65%
UV index
5 - Moderate
Sunrise / sunset
06:08 AM / 08:23 PM
Saturday, August 22
Overcast High 70° Low 51°Precipitation
14%
· 0.0 in
Max wind
9 mph
Humidity
60%
UV index
5 - Moderate
Sunrise / sunset
06:09 AM / 08:21 PM
Sunday, August 23
Overcast High 74° Low 50°Precipitation
6%
· 0.0 in
Max wind
11 mph
Humidity
49%
UV index
6 - High
Sunrise / sunset
06:11 AM / 08:19 PM
Monday, August 24
Overcast High 70° Low 52°Precipitation
12%
· 0.0 in
Max wind
20 mph
Humidity
56%
UV index
5 - Moderate
Sunrise / sunset
06:12 AM / 08:17 PM
Tuesday, August 25
Sunny High 71° Low 54°Precipitation
5%
· 0.0 in
Max wind
11 mph
Humidity
58%
UV index
6 - High
Sunrise / sunset
06:14 AM / 08:15 PM
Wednesday, August 26
Overcast High 66° Low 51°Precipitation
81%
· 0.2 in
Max wind
14 mph
Humidity
81%
UV index
4 - Moderate
Sunrise / sunset
06:16 AM / 08:12 PM
Thursday, August 27
Patchy rain nearby High 69° Low 55°Precipitation
43%
· 0.01 in
Max wind
17 mph
Humidity
76%
UV index
5 - Moderate
Sunrise / sunset
06:17 AM / 08:10 PM
Friday, August 28
Light rain shower High 70° Low 57°Precipitation
91%
· 0.48 in
Max wind
17 mph
Humidity
89%
UV index
5 - Moderate
Sunrise / sunset
06:19 AM / 08:08 PM
Saturday, August 29
Patchy rain nearby High 64° Low 55°Precipitation
69%
· 0.09 in
Max wind
18 mph
Humidity
79%
UV index
5 - Moderate
Sunrise / sunset
06:20 AM / 08:06 PM
Sunday, August 30
Patchy rain nearby High 63° Low 51°Precipitation
59%
· 0.07 in
Max wind
16 mph
Humidity
75%
UV index
5 - Moderate
Sunrise / sunset
06:22 AM / 08:04 PM
Monday, August 31
Patchy rain nearby High 64° Low 50°Precipitation
26%
· 0.0 in
Max wind
15 mph
Humidity
73%
UV index
4 - Moderate
Sunrise / sunset
06:24 AM / 08:02 PM
Cardiff 14-day outlook: the story
The warmest day of Cardiff's 14-day outlook is Sunday, August 23 with a high near 74°F (24°C); the coolest night comes Friday, August 21, dipping to 48°F (9°C). The trend points cooler: week two runs about 3°F below week one. Highs over the next two weeks average 70°F (21°C), right in line with the typical August high of 68°F (20°C).
Precipitation is most likely on Wednesday 19, Thursday 20, Wednesday 26, Friday 28 and beyond; the wettest day looks like Friday, August 28 with about 0.48 in (12.1 mm) expected. For the weekend, expect Saturday 70°F (21°C) and overcast / Sunday 74°F (24°C) and overcast.
For typical conditions month by month, see the Cardiff climate & average temperatures guide.
Cardiff forecast questions
Will it rain in Cardiff this week?
The forecast currently shows meaningful precipitation chances on 6 of the next 14 days, peaking around Friday, August 28.
What will be the warmest day in Cardiff over the next 14 days?
Sunday, August 23, with a forecast high near 74°F (24°C).
How accurate is a 14-day forecast for Cardiff?
Days 1-3 are highly reliable, days 4-7 capture the overall pattern well, and days 8-14 indicate trends rather than exact figures - check back as the date approaches; this page refreshes throughout the day.
Average temperatures in Cardiff by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 46° | 37° | 15 | 4.0 in | 4.1 h/day | 87% |
| February | 48° | 38° | 14 | 4.2 in | 5.3 h/day | 84% |
| March | 50° | 39° | 16 | 4.2 in | 6.9 h/day | 81% |
| April | 55° | 41° | 11 | 2.6 in | 9.8 h/day | 76% |
| May | 61° | 47° | 12 | 3.3 in | 11.1 h/day | 77% |
| June | 66° | 53° | 12 | 2.6 in | 11.7 h/day | 76% |
| July | 69° | 56° | 15 | 3.4 in | 11.4 h/day | 77% |
| August | 68° | 56° | 15 | 4.0 in | 10.0 h/day | 80% |
| September | 64° | 53° | 13 | 4.1 in | 8.5 h/day | 82% |
| October | 58° | 48° | 16 | 5.4 in | 6.3 h/day | 84% |
| November | 51° | 43° | 15 | 4.4 in | 4.4 h/day | 87% |
| December | 49° | 41° | 17 | 5.6 in | 3.3 h/day | 89% |
14-day forecasts nearby